Priming-pump.



F. G. CRONE. PRIMING PUMP. APPIJIQA'TIOH FILED MAR. 24, 1909.

Patented Dec.3, 1912.

INVENTOR WITNESSES: I (iii/Q ATTORNEY FRANCIS G. GRONE, 0F BUFFALO, NEW YORK.

PRIMING-PUMP.

Specification of Letters Patent.

Patented Dec. 3, 1912 Application filed March 24, 1909. Serial No. 485,475.

To all whom it may concern:

Be it known that I, FRANCIS G..CRONE, a citizen of the United States, and a resident of B'ufialo, county of Erie, and State of New York, have invented certain new and useful Improvements in Priming-Pumps, of which the following is a full, clear, and exact-description. I

.My invention relates generally tomeans for furnishing to the cylinder or cylinders of a gas or gasolene engine, a supply of gas or gasolene previous to the starting of the engine, that is, before any suction is produced in such cylinder or cylinders by the action of the pistons.

More particularly my invention is designed to supply to an automobile driven by a gas or gasolene engine a means, before the cranking of the engine takes place for supplying to the intake pipe of the engine, a suitable quantity of gas or gasolene so that as soon as a suction is produced in the cylinder or cylinders of the engine a sufiicient quantity of gas or gasolene will be present therein to vaporize, and thus provide a; quick and certain starting operation of the engine.

It is well known that when gas or gasolene engines are started by cranking or otherwise, it is diflicult to obtain a quick starting because a suflicient quantity of gas or gasolene is not present in the intake pipes at first to produce a vaporized combustible 'mixture. lhus much delay and a large 35 amount of cranking is sometimes necessary to get the engine started.

By means of my invention, I am able to supply by a very simple and quick operation to the intake pipe or pipes of the engine, a suitable quantity of gas or gasolene, so that as soon as a suction in the cylinders is produced, a vaporized combustible mixture is immediately ready to be taken into the cylinders and ignited.

The many advantages of my invention will be evident to those skilled in the art from the accompanying drawing and the following description.

The accompanying drawing shows dia grammatically-three cylinders of a gas or gasolene engine and its carbureter, equipped with my invention.

In the drawing the engine cylinders are marked 1, 2 and 3, and their igniting devices are marked 4,5, and 6. 7 is an intake pipe having branch connections into each of the and between it an cylinders 1, 2 and 3, and 8 is the manifold pipe leading into the intake pipe from the carbureter 9. Into the carbureter 9 the usual suction or air pipe .10 leads. 11 is a gasolene tank of any suitable size which is connected by pipe 12 with the carbureter 9 so that the carbureter is supplied in the usual way with gasolene. Connected at a suitable place to the carbureter but preferably in its lower part (is a pipe 13 whose inlet from the carbureter is controlled by stop-cock 14 and it leads to a check valve casing 15 which is located at a suitable place near the carbureter. Leading from the check valve casing 15 is a pipe 16 having a free opening into the check valve casing and having its outlet opening 17 into the intake pipe 7. This outlet opening is controlled by the stop-cock 18. A pump 19 is either made integral with the check valve casing 15, or suitably connected therein and the operation of this ump is controlled by a handle 20. The check valve casing 15 is provided with a portway 21, free passage through which is'controlled by a ball valve 22, a ball valve 23, and a needle valve 24. The pump 19 has a cylinder or casing 25 within which a plunger 26 is adapted to play up and down. This plunger 26 is preferably made from a solid bar and a part of the interior is cut awa leaving a center post 27 the outside periphery of place a spring 28 one end of which rests against the lower end of the plunger 26 and the upper end of which rests against the cap 29, which is preferably screw-threaded to the upper part of the cyhnder 25. The lower part of the center the plunger 26, I

post 27 is preferably hollowed out part Way so as to receive the needle valve 24 which rests loosely therein. This needle valve 24 has its seat in the port-way 21 as clearly shown. Normally the spring 28 holds the plunger 26 in its lowermost position and thereby the needle valve 24 is held firmly in its seat by the pressure of the center post 27 against the upper end of the needle valve. Obviously this construction is such that the needle valve by the pressure just described finds its own center, but if desired, it is evident that the needle valve may be screw-threaded to the bottom part of the plunger 26, and so adjusted that when the plunger is in its lowermost position, the needle valve will be maintained in its seat.

The cap 29 is provided with a suitable supporting lug onwhich may be pivotally mounted a bell crank 31 one arm of which is connected by a wire 32 or other suitable connecting means to the upper end of the center post 27. The other arm of the bell crank 31 is connected to one end of a wire or rod 33 and the other end of this wire or rod 33 is connected to the handle 20.

It will be noted that the port-way 21 has three valve controls, one by means of the ball valve 22, another by means of the needle valve 24, and a third by means of the ball valve 23. This port-way, communicating as described with-the carbureter Qthrough the pipe 18 and with the intake pipe 7 through the pipe 16,-'-may- -be influenced by suction produced in the cylinders 1, 2 and 3. In order to prevent any travel of gas or gasolene from the carbureter 9 through the pipe 13, port-way 21, and pipe 16 to the cylinders 1, 2 and 3, I so place the needle valve 24: in the said port-way 21 that it will be always completely closed against any suction which may be producedand thus prevent the travel of gas or gasolene. through it except when the handle 20 is manipulated so that when the plunger 26 rises, it releases the pressure on the needle valve 2 1 and thus allows a free passage through the said port-way. Ob

0 viously when the plunger26 is raised as described, the pins 34 on either side of the needle valve 24will engage with the slight depressions, in the needle valve and thus raise it away from its seat. When the plunger 26 is moved upwardly, it tends to release pressure on the ball valve 22 at the same time that it lifts the needle valve 24: from its seat. When the plun er 26 is moved downwardly, it creates a su cient pressure to not onlyseat the needle valve 24:, but also to force the ball valve 22 upon its seat.

Having thus described the several parts of my invention, I will now describe its operation. Assuming that the engine is not workmg and that no explosive mixture is contained in its cylinder or cylinders, the pet-- cocks 14 and 18 are first thrown 0 en so that a free passageway is thus opene from the carbureter 9 into the pipe 13 and from die 20 which is located the pipe 16 into the intake pipe 7 The hanat any suitable place and adapted to be thrown backwardly and forwardly, is then moved backward and forward and thus through its connections, move, up and down the plunger 26. When the plunger 26 rises, it draws with it the needle valve 24 thus opening that valve in the portway 21 and by the suction so produced, it tends to draw the ball valve 22 from its seat. Thus gasvor gasolene may then freely travel from the car ureter 9 through ipe 13 past the ball valve 22, past the nee le valve 24, and this upward pressure will force to its seat ball valve 23, so that the gas or gasolene will then travel completely through the port-way .21 into the pipe 16 and thence into the intake pipe 7. When the plunger 26 is driven downwardly, the needle valve 24lwill thus be seated in the port-way 21 and as described, the pressure thus produced will tend to seat the ball valve 22. Simultaneously the upward pressure against the ball valve 23 being cut off, that valve will tend to seat itself in the position shown in the drawing. A free operation of the handle 20 thus drawing the plunger upwardly and downwardly as described, will deliver to the intake pipe 7 in the manner described, a sufficient quantity of gas or gasolene from the carbureter!) so that an explosive mixture is ready to be taken into the cylinder or cylinders of the engine.

When the above operations have been completed the cranking of the engine follows in the ordinary way and but a slight cranking operation is necessary to start the engine because of the fact that an explosive mixture is ready to be taken into the cylinders as soon as an initial suction is produced and the engine will start quickly if the ignition devices are operatively connected to the cylinders.

It will be obvious from the foregoing description of my invention that some modifications may be made without departing from its spirit and I do not wish to be limited by the following claims to the exact structure herein shown and described.

What I claim is:

1. In a gas engine the combination with its cylinders and carbureter of a priming pump comprising a manually operated plunger and check valve casing, means for connecting said check valve casing with said carbureter, means for connecting said check valve casing with said cylinders and means for controlling the passage of gas through said check valve casing comprising a valve actuated by said plunger and a valve actuated by the suction produced by the action of said plunger.

2. In a gas engine the combination with its cylinders and Its carbureter of a priming pump comprising a manually operated plunger, a check valve casing, means for connecting said check valve casing with said carbureter, means for connecting said check valve casin with said cylinders and means for controlling the passage of gas from said check valve casing comprising a valve actuated by said plunger and valves actuated by be forced upon its seat in said check valve casing and to be drawn away therefrom by the operation of said plunger.

4:. In a gas engine the combination with its cylinders, a carbureter and a cylinder intake pipe of a priming pump comprising a manually operated plunger, a check-valve casing, valve casing with said carbureter, means for connecting said check valve casing with said intake pipe, and a needle valve loosely mounted insaid plunger and adapted to be seated'in said check valve casing and to be unseated therefrom by the operation of said plunger.

5. In a gas engine the combination with its cylinders, a carbureter and a cylinderintake pipe of a priming pump, comprisin a cylinder, a plunger movable in said cylin er, a check valve casing, means connecting said check valve casing with said carbureter,

means connecting said check valve casing with said intake pipe, a needle valve adapted to be seated in said check valve casing, a spring whose normal tendency is to hold said plunger in its lowermost-position in the said cylinder and means for manually operating said plunger in said cylinder.

means for connecting said check.

6. In a gas engine the combination with its cylinders, a carburetor and a cylinder intake pipe of a priming pump, comprising a cylinder, a plunger movable in said cylinder, a spring adapted to normally hold said plunger in its lowermost position in said cylinder, a check valve casing, means connecting said check valve casing with said carbureter, means connecting said" check valve casing with said intake pipe, aloosely mounted needle valve adapted to be seated in said check valve casing and to be unseated therefrom by the movement of said plunger, and ball valves in said check-valve casing whereby when said needle valve is seated the suction from the cylinders cannot produce the passage of gas and when said needle valve is raised from its seat and'when the engine inrunning gas or gasolene will be drawn from said carbureter through said check valve casing to said cylinders.

In testimony whereof I my hand in the presence of two witnesses.

FRANcis CRONE.

Witnesses:

ETHEL A. KELLY, J. WM. ELLIS.

have hereunto set 

